Erratum to: Prevalence, sensitivity and specificity of antibodies against carbamylated proteins in a monocentric cohort of patients with rheumatoid arthritis and other autoimmune rheumatic diseases

Anti-CarP antibodies were detected in 117 patients with RA (37.9%), ACPA in 190 patients (61.4%) and RF in 202 patients (65.3%). Two (2.04%) of the NHS were positive for anti-CarP, one NHS (1.02%) was positive for ACPA and three NHS were positive for RF (3.06%). Among disease controls, anti-CarP antibodies were detected in 33 patients (16.5%), ACPA in 29 patients (14.5%) and RF in 64 patients (32%). In particular, 16.8% of patients with systemic lupus erythematosus and 31.1% of patients with Sjögren syndrome were positive for anti-CarP. The sensitivity of anti-CarP, ACPA and RF was 46.8, 61.8 and 64.4%, respectively and specificity was 91.95, 89.93 and 76.51%, respectively.

Unfortunately, after publication of this article [1], it was noticed that the percentage of patients listed as RA positive was incorrect in two locations. In the ‘Results’ section of the abstract and in row 1, column 2 of Table 2, the percentage was listed as 34.4%. The actual percentage should be 37.9%. The corrected ‘Results’ section of the abstract can be seen above and the corrected Table 2 can be seen below.

Affiliations

1. Dipartimento di Medicina Interna e Specialità Mediche, Reumatologia, Sapienza Università di Roma, Rome, Italy
   • Arbi Pecani
   • , Cristiano Alessandri
   • , Francesca Romana Spinelli
   • , Roberta Priori
   • , Valeria Riccieri
   • , Manuela Di Franco
   • , Fulvia Ceccarelli
   • , Tania Colasanti
   • , Monica Pendolino
   • , Riccardo Mancini
   • , Simona Truglia
   • , Cristiana Barbati
   • , Marta Vomero
   • , Danilo Sabatinelli
   • , Francesca Morello
   • , Guido Valesini
   •  & Fabrizio Conti

Corresponding author

Correspondence to Cristiano Alessandri.

The online version of the original article can be found under doi:10.1186/s13075-016-1173-0.

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